Question

sin^2 75 + cos^2 75 =
A= tan^2 45
B= cos 60
C = sin^2 30

Answer 1

Answer:

θ = 1 − sin 2 ⁡ The square of cosine function equals to the subtraction of square of sin function from one is called the cosine squared formula. It is also called as the square of cos function identity.

Answer 2

$sin^2 75+cos^2 75=1 \\ \\ tan^2 45=1 \\ \\ cos60=\frac{1}{2} \\ \\ sin^2 30=\frac{1}{4}$